87 lines
3.5 KiB
C++
87 lines
3.5 KiB
C++
|
// RUN: %clang_cc1 -std=c++11 -verify %s
|
||
|
|
|
||
|
|
alignas(4) extern int n1; // expected-note {{previous declaration}}
|
||
|
|
alignas(8) int n1; // expected-error {{redeclaration has different alignment requirement (8 vs 4)}}
|
||
|
|
|
||
|
|
alignas(8) int n2; // expected-note {{previous declaration}}
|
||
|
|
alignas(4) extern int n2; // expected-error {{different alignment requirement (4 vs 8)}}
|
||
|
|
|
||
|
|
alignas(8) extern int n3; // expected-note {{previous declaration}}
|
||
|
|
alignas(4) extern int n3; // expected-error {{different alignment requirement (4 vs 8)}}
|
||
|
|
|
||
|
|
extern int n4;
|
||
|
|
alignas(8) extern int n4;
|
||
|
|
|
||
|
|
alignas(8) extern int n5;
|
||
|
|
extern int n5;
|
||
|
|
|
||
|
|
int n6; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}}
|
||
|
|
alignas(8) extern int n6; // expected-note {{declared with 'alignas' attribute here}}
|
||
|
|
|
||
|
|
extern int n7;
|
||
|
|
alignas(8) int n7;
|
||
|
|
|
||
|
|
alignas(8) extern int n8; // expected-note {{declared with 'alignas' attribute here}}
|
||
|
|
int n8; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}}
|
||
|
|
|
||
|
|
int n9; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}}
|
||
|
|
alignas(4) extern int n9; // expected-note {{declared with 'alignas' attribute here}}
|
||
|
|
|
||
|
|
|
||
|
|
enum alignas(2) E : char; // expected-note {{declared with 'alignas' attribute here}}
|
||
|
|
enum E : char {}; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}}
|
||
|
|
|
||
|
|
enum alignas(4) F : char; // expected-note {{previous declaration is here}}
|
||
|
|
enum alignas(2) F : char; // expected-error {{redeclaration has different alignment requirement (2 vs 4)}}
|
||
|
|
|
||
|
|
enum G : char;
|
||
|
|
enum alignas(8) G : char {};
|
||
|
|
enum G : char;
|
||
|
|
|
||
|
|
enum H : char {}; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}}
|
||
|
|
enum alignas(1) H : char; // expected-note {{declared with 'alignas' attribute here}}
|
||
|
|
|
||
|
|
|
||
|
|
struct S;
|
||
|
|
struct alignas(16) S; // expected-note {{declared with 'alignas' attribute here}}
|
||
|
|
struct S;
|
||
|
|
struct S { int n; }; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}}
|
||
|
|
|
||
|
|
struct alignas(2) T;
|
||
|
|
struct alignas(2) T { char c; }; // expected-note {{previous declaration is here}}
|
||
|
|
struct T;
|
||
|
|
struct alignas(4) T; // expected-error {{redeclaration has different alignment requirement (4 vs 2)}}
|
||
|
|
|
||
|
|
struct U;
|
||
|
|
struct alignas(2) U {};
|
||
|
|
|
||
|
|
struct V {}; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}}
|
||
|
|
struct alignas(1) V; // expected-note {{declared with 'alignas' attribute here}}
|
||
|
|
|
||
|
|
template<int M, int N> struct alignas(M) W;
|
||
|
|
template<int M, int N> struct alignas(N) W {};
|
||
|
|
W<4,4> w44; // ok
|
||
|
|
// FIXME: We should reject this.
|
||
|
|
W<1,2> w12;
|
||
|
|
static_assert(alignof(W<4,4>) == 4, "");
|
||
|
|
|
||
|
|
template<int M, int N, int O, int P> struct X {
|
||
|
|
alignas(M) alignas(N) static char Buffer[32]; // expected-note {{previous declaration is here}}
|
||
|
|
};
|
||
|
|
template<int M, int N, int O, int P>
|
||
|
|
alignas(O) alignas(P) char X<M, N, O, P>::Buffer[32]; // expected-error {{redeclaration has different alignment requirement (8 vs 2)}}
|
||
|
|
char *x1848 = X<1,8,4,8>::Buffer; // ok
|
||
|
|
char *x1248 = X<1,2,4,8>::Buffer; // expected-note {{in instantiation of}}
|
||
|
|
|
||
|
|
template<int M, int N, int O, int P> struct Y {
|
||
|
|
enum alignas(M) alignas(N) E : char;
|
||
|
|
};
|
||
|
|
template<int M, int N, int O, int P>
|
||
|
|
enum alignas(O) alignas(P) Y<M,N,O,P>::E : char { e };
|
||
|
|
int y1848 = Y<1,8,4,8>::e;
|
||
|
|
// FIXME: We should reject this.
|
||
|
|
int y1248 = Y<1,2,4,8>::e;
|
||
|
|
|
||
|
|
// Don't crash here.
|
||
|
|
alignas(4) struct Incomplete incomplete; // expected-error {{incomplete type}} expected-note {{forward declaration}}
|